Automatic brake for talking-machines.



. G. BUBLNA. AUTOMATIC BRAKE FOB. TEKING MACHINES.

, APBLIUATVIQN FILED mY-.L-1aoa. 202 .Patented Feb.2,19o9.

77752-2' ima@ @W i UNITED sTATEs PATENT onirica.

-GUADALUPE BUELNA, OE SANTA BARBARA, CALIFORNIA, ASSIGNOR OF ONE-HALF `TO ARTHUR E. BURSON, OF SANTA BARBARA, CALIFORNIA. s f

Specication of Letters Patent.

Patented Feb. 2, 1909.

Application led May 11, 1908. Serial No. 432,261.

To all whom fit may concer.; f s

Be it known that I, GUADALUPE BUELNA, a citizen of the United States, residing at Santa Barbara,'in the county of Santa Barbara and State of California, have invented certain new and useful Improvements 1n Automatic Brakes for Talking-Machines, of which the following is a specification.

This invention relates to brakes for talking machines and particularly to that class of brake caused to be actuated automatically by the sound box carrier arms of phonographs.

An obj ect of this inventipn is to provide a brake, Wh ich combines simplicity with efficiency and which is readily and quickly applicable to all talking `machines, in avoidance of allA necessity for adjustment to the varying sizes of disks now manufactured.

In contradistinction to the brakes now manufactured and usedthis invention contemplates the provision of an automatic brake designed to act upon the under surface of the disk carrier periphery. By causing the braking action to be efected in this manner, lateral strains and excessive wear of the elements of a brake are reduced to a minimum` if not completely eliminated. Consequently the brake may act with superior velocity Without causing the strains by reason of the 4rotary motion of the disk carrier Ato be concentrated to one particular point.

A brake after the presenttype not only causes the gentle application of the braking effect, but assists the carrier arm for the sound box to traverse the ungrooved surface of the record previous to the application of the brake which is nearly simultaneous with the completion of the reproduction of' the record. 4 This mventlon comprises such other features, detalls of invention andcombmation of parts as will appearin the accompanying f drawing, and then to be more particularly pointed out in the claims.

In' the drawing: Figure 1', is a side eleva. tion of the invention as applied. Fig. 2, is a front elevation, and Fig. 3, is a plan view.

Speciore'ference being had to the drawing, 1. designates the motor containing'box of an ordinary talking machine, 2. is a record carrier, 3.a disk record, and 1 a sound box carrier arm of the ordinary type. Upon the box 1 is arranged to be fastened by any suitable means, a plate 5 having two hooks (S made integral with the plate 5.

7 is a lever provided with arms 8 to engage the hooks 6. This. lever is provided with a brake shoe, 9 held on the same by the prehensile tangs a provided on the said lever 7. 10 is a spring, one end of which exerts tension against t-he underside of the ,lever 7, and theother end of which is in loose engagement with the plate 5, in this manner giving to said lever a position; which is normally angular to the parall motor containing box 1, thereby causing the brake shoe 9 Awhen free, to act underlthe pressure of the spring to bear against the outer under periphery of the disk-carrier. A tang 11 is formed contiguous with the said lever 7 at a point beyond the said arms 8, this provision being made to limitv the movement of the lever in an upward direction.

4The lever 7 terminates in substantially a T, having its respective ends 12 and 13 bent.

When the sound-box stylus is .placedin the outermost groove of the record `preparatory to the reproduction thereof, the sound' box carrier arm, depressing the lever 7 releases the brake shoe and leaves the motor free to rotate the disk-carrier. The bend 12 is provided to cause the initial release of the brake as well as to facilitate the travel of the carrier arm onto the flat surface 14 of' the T. The movement of the carrier arm onto the said flat surface `continues to hold the lever 7 and the brake inoperative until the carrier arm reaches thebend 13, when 'the lever is free and the spring 10 forces the lever upwardly thereby bringing the brake-shoe 9 into speedy and firm engagement w'ith the periphery of-the .disk carriergand stopping the rotation'of the disk carrier upon the re production of a record, irrespective of the size thereof. The bend 13 does not ,only

free the' lever, but has a tendency to force lthe carrier arm towards the center of the record' when for' any reason the stylus of the sound box does not escape from the last cove of the'record.

It will be 'seen from the'above description that the brake is held'inoperative and the Q v street.

the brake lever having a normal Contact with lthe sound box ca rrierarm' during a part of the travel thereof to hold the same inoperative, and Ineens to cause the seid lever. to escape from the sound box carriervduring .another part of the travel thereof.

3. A disk carrier, a supporttherefor', and a sound box carrier arm in combination with aL brake lever having anormal Contact With the sound box carrier arm duringe part of the travel thereof to hold the same inoperative, and an inclined portion 'on said lever to cause seid lever to; escape. from the sound box carrier duringnother part of the travel thereof.

4. A disk carrier, .a support therefor, and a sound box carrier arm 41n combination W1th.

the brake lever having a no1-mel Contact with the sound box carrier arm during a part of carried by said lever an like, comprising e sn "actuable by the rnoveme'nu of the sound box the travel thereof to hold the seme inoperative, and mea-ns carried by said lever to cause said lever to escape from the sound box cor-- rier during another part ofthe trgrvel thereof. r

5. ln combination with the disk c support therefor and n. sound bei: Currier arm, s brake comprising a. lever :arranged lo lieve normal Contact with seid carrier :mn te hold said brake inopcrativ during u. part of the travel of the said csr' fxfm, und

i .llll'jlllf to operate said brake to contact uit-h the underside of sind disk cnrrierdurin noiluu' part of the travel of sind sound box tui-rior.

6. A. brake fortullring machines :md thc like, comprising :t support,

bring ictuuted lever pivoted in sind sunnor brake shoe l 'o engage @talking i'nuhje to nel uuic the underside of the d machine, and means on. L

the brake.`

T'. A brake for tn.

his; machines and the ingr actuated lever7 .s leiht; having u. l hold and release said lever beine" support therefor, seid shaped arm to succe said lever at diiferen carrier of the talking machine. i

GUADALUPE BUELNA.

lVitnesses: J. H. Bonson, J. A. CoA'rEs. 

